1 /*
2 * Copyright (C) 2008 Ben Skeggs.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27 #include "nouveau_drv.h"
28 #include "nouveau_dma.h"
29 #include "nouveau_fence.h"
30 #include "nouveau_abi16.h"
31
32 #include "nouveau_ttm.h"
33 #include "nouveau_gem.h"
34 #include "nouveau_mem.h"
35 #include "nouveau_vmm.h"
36
37 #include <nvif/class.h>
38 #include <nvif/push206e.h>
39
40 void
nouveau_gem_object_del(struct drm_gem_object * gem)41 nouveau_gem_object_del(struct drm_gem_object *gem)
42 {
43 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
44 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
45 struct device *dev = drm->dev->dev;
46 int ret;
47
48 ret = pm_runtime_get_sync(dev);
49 if (WARN_ON(ret < 0 && ret != -EACCES)) {
50 pm_runtime_put_autosuspend(dev);
51 return;
52 }
53
54 if (gem->import_attach)
55 drm_prime_gem_destroy(gem, nvbo->bo.sg);
56
57 ttm_bo_put(&nvbo->bo);
58
59 pm_runtime_mark_last_busy(dev);
60 pm_runtime_put_autosuspend(dev);
61 }
62
63 int
nouveau_gem_object_open(struct drm_gem_object * gem,struct drm_file * file_priv)64 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
65 {
66 struct nouveau_cli *cli = nouveau_cli(file_priv);
67 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
68 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
69 struct device *dev = drm->dev->dev;
70 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
71 struct nouveau_vma *vma;
72 int ret;
73
74 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
75 return 0;
76
77 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
78 if (ret)
79 return ret;
80
81 ret = pm_runtime_get_sync(dev);
82 if (ret < 0 && ret != -EACCES) {
83 pm_runtime_put_autosuspend(dev);
84 goto out;
85 }
86
87 ret = nouveau_vma_new(nvbo, vmm, &vma);
88 pm_runtime_mark_last_busy(dev);
89 pm_runtime_put_autosuspend(dev);
90 out:
91 ttm_bo_unreserve(&nvbo->bo);
92 return ret;
93 }
94
95 struct nouveau_gem_object_unmap {
96 struct nouveau_cli_work work;
97 struct nouveau_vma *vma;
98 };
99
100 static void
nouveau_gem_object_delete(struct nouveau_vma * vma)101 nouveau_gem_object_delete(struct nouveau_vma *vma)
102 {
103 nouveau_fence_unref(&vma->fence);
104 nouveau_vma_del(&vma);
105 }
106
107 static void
nouveau_gem_object_delete_work(struct nouveau_cli_work * w)108 nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
109 {
110 struct nouveau_gem_object_unmap *work =
111 container_of(w, typeof(*work), work);
112 nouveau_gem_object_delete(work->vma);
113 kfree(work);
114 }
115
116 static void
nouveau_gem_object_unmap(struct nouveau_bo * nvbo,struct nouveau_vma * vma)117 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
118 {
119 struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
120 struct nouveau_gem_object_unmap *work;
121
122 list_del_init(&vma->head);
123
124 if (!fence) {
125 nouveau_gem_object_delete(vma);
126 return;
127 }
128
129 if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
130 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
131 nouveau_gem_object_delete(vma);
132 return;
133 }
134
135 work->work.func = nouveau_gem_object_delete_work;
136 work->vma = vma;
137 nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
138 }
139
140 void
nouveau_gem_object_close(struct drm_gem_object * gem,struct drm_file * file_priv)141 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
142 {
143 struct nouveau_cli *cli = nouveau_cli(file_priv);
144 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
145 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
146 struct device *dev = drm->dev->dev;
147 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
148 struct nouveau_vma *vma;
149 int ret;
150
151 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
152 return;
153
154 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
155 if (ret)
156 return;
157
158 vma = nouveau_vma_find(nvbo, vmm);
159 if (vma) {
160 if (--vma->refs == 0) {
161 ret = pm_runtime_get_sync(dev);
162 if (!WARN_ON(ret < 0 && ret != -EACCES)) {
163 nouveau_gem_object_unmap(nvbo, vma);
164 pm_runtime_mark_last_busy(dev);
165 }
166 pm_runtime_put_autosuspend(dev);
167 }
168 }
169 ttm_bo_unreserve(&nvbo->bo);
170 }
171
172 int
nouveau_gem_new(struct nouveau_cli * cli,u64 size,int align,uint32_t domain,uint32_t tile_mode,uint32_t tile_flags,struct nouveau_bo ** pnvbo)173 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
174 uint32_t tile_mode, uint32_t tile_flags,
175 struct nouveau_bo **pnvbo)
176 {
177 struct nouveau_drm *drm = cli->drm;
178 struct nouveau_bo *nvbo;
179 int ret;
180
181 if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
182 domain |= NOUVEAU_GEM_DOMAIN_CPU;
183
184 nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
185 tile_flags);
186 if (IS_ERR(nvbo))
187 return PTR_ERR(nvbo);
188
189 /* Initialize the embedded gem-object. We return a single gem-reference
190 * to the caller, instead of a normal nouveau_bo ttm reference. */
191 ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
192 if (ret) {
193 drm_gem_object_release(&nvbo->bo.base);
194 kfree(nvbo);
195 return ret;
196 }
197
198 ret = nouveau_bo_init(nvbo, size, align, domain, NULL, NULL);
199 if (ret) {
200 nouveau_bo_ref(NULL, &nvbo);
201 return ret;
202 }
203
204 /* we restrict allowed domains on nv50+ to only the types
205 * that were requested at creation time. not possibly on
206 * earlier chips without busting the ABI.
207 */
208 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
209 NOUVEAU_GEM_DOMAIN_GART;
210 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
211 nvbo->valid_domains &= domain;
212
213 nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
214 *pnvbo = nvbo;
215 return 0;
216 }
217
218 static int
nouveau_gem_info(struct drm_file * file_priv,struct drm_gem_object * gem,struct drm_nouveau_gem_info * rep)219 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
220 struct drm_nouveau_gem_info *rep)
221 {
222 struct nouveau_cli *cli = nouveau_cli(file_priv);
223 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
224 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
225 struct nouveau_vma *vma;
226
227 if (is_power_of_2(nvbo->valid_domains))
228 rep->domain = nvbo->valid_domains;
229 else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
230 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
231 else
232 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
233 rep->offset = nvbo->offset;
234 if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
235 vma = nouveau_vma_find(nvbo, vmm);
236 if (!vma)
237 return -EINVAL;
238
239 rep->offset = vma->addr;
240 }
241
242 rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
243 rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
244 rep->tile_mode = nvbo->mode;
245 rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
246 if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
247 rep->tile_flags |= nvbo->kind << 8;
248 else
249 if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
250 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
251 else
252 rep->tile_flags |= nvbo->zeta;
253 return 0;
254 }
255
256 int
nouveau_gem_ioctl_new(struct drm_device * dev,void * data,struct drm_file * file_priv)257 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
258 struct drm_file *file_priv)
259 {
260 struct nouveau_cli *cli = nouveau_cli(file_priv);
261 struct drm_nouveau_gem_new *req = data;
262 struct nouveau_bo *nvbo = NULL;
263 int ret = 0;
264
265 ret = nouveau_gem_new(cli, req->info.size, req->align,
266 req->info.domain, req->info.tile_mode,
267 req->info.tile_flags, &nvbo);
268 if (ret)
269 return ret;
270
271 ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
272 &req->info.handle);
273 if (ret == 0) {
274 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
275 if (ret)
276 drm_gem_handle_delete(file_priv, req->info.handle);
277 }
278
279 /* drop reference from allocate - handle holds it now */
280 drm_gem_object_put(&nvbo->bo.base);
281 return ret;
282 }
283
284 static int
nouveau_gem_set_domain(struct drm_gem_object * gem,uint32_t read_domains,uint32_t write_domains,uint32_t valid_domains)285 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
286 uint32_t write_domains, uint32_t valid_domains)
287 {
288 struct nouveau_bo *nvbo = nouveau_gem_object(gem);
289 struct ttm_buffer_object *bo = &nvbo->bo;
290 uint32_t domains = valid_domains & nvbo->valid_domains &
291 (write_domains ? write_domains : read_domains);
292 uint32_t pref_domains = 0;;
293
294 if (!domains)
295 return -EINVAL;
296
297 valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
298
299 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
300 bo->mem.mem_type == TTM_PL_VRAM)
301 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
302
303 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
304 bo->mem.mem_type == TTM_PL_TT)
305 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
306
307 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
308 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
309
310 else
311 pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
312
313 nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
314
315 return 0;
316 }
317
318 struct validate_op {
319 struct list_head list;
320 struct ww_acquire_ctx ticket;
321 };
322
323 static void
validate_fini_no_ticket(struct validate_op * op,struct nouveau_channel * chan,struct nouveau_fence * fence,struct drm_nouveau_gem_pushbuf_bo * pbbo)324 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
325 struct nouveau_fence *fence,
326 struct drm_nouveau_gem_pushbuf_bo *pbbo)
327 {
328 struct nouveau_bo *nvbo;
329 struct drm_nouveau_gem_pushbuf_bo *b;
330
331 while (!list_empty(&op->list)) {
332 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
333 b = &pbbo[nvbo->pbbo_index];
334
335 if (likely(fence)) {
336 nouveau_bo_fence(nvbo, fence, !!b->write_domains);
337
338 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
339 struct nouveau_vma *vma =
340 (void *)(unsigned long)b->user_priv;
341 nouveau_fence_unref(&vma->fence);
342 dma_fence_get(&fence->base);
343 vma->fence = fence;
344 }
345 }
346
347 if (unlikely(nvbo->validate_mapped)) {
348 ttm_bo_kunmap(&nvbo->kmap);
349 nvbo->validate_mapped = false;
350 }
351
352 list_del(&nvbo->entry);
353 nvbo->reserved_by = NULL;
354 ttm_bo_unreserve(&nvbo->bo);
355 drm_gem_object_put(&nvbo->bo.base);
356 }
357 }
358
359 static void
validate_fini(struct validate_op * op,struct nouveau_channel * chan,struct nouveau_fence * fence,struct drm_nouveau_gem_pushbuf_bo * pbbo)360 validate_fini(struct validate_op *op, struct nouveau_channel *chan,
361 struct nouveau_fence *fence,
362 struct drm_nouveau_gem_pushbuf_bo *pbbo)
363 {
364 validate_fini_no_ticket(op, chan, fence, pbbo);
365 ww_acquire_fini(&op->ticket);
366 }
367
368 static int
validate_init(struct nouveau_channel * chan,struct drm_file * file_priv,struct drm_nouveau_gem_pushbuf_bo * pbbo,int nr_buffers,struct validate_op * op)369 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
370 struct drm_nouveau_gem_pushbuf_bo *pbbo,
371 int nr_buffers, struct validate_op *op)
372 {
373 struct nouveau_cli *cli = nouveau_cli(file_priv);
374 int trycnt = 0;
375 int ret = -EINVAL, i;
376 struct nouveau_bo *res_bo = NULL;
377 LIST_HEAD(gart_list);
378 LIST_HEAD(vram_list);
379 LIST_HEAD(both_list);
380
381 ww_acquire_init(&op->ticket, &reservation_ww_class);
382 retry:
383 if (++trycnt > 100000) {
384 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
385 return -EINVAL;
386 }
387
388 for (i = 0; i < nr_buffers; i++) {
389 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
390 struct drm_gem_object *gem;
391 struct nouveau_bo *nvbo;
392
393 gem = drm_gem_object_lookup(file_priv, b->handle);
394 if (!gem) {
395 NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
396 ret = -ENOENT;
397 break;
398 }
399 nvbo = nouveau_gem_object(gem);
400 if (nvbo == res_bo) {
401 res_bo = NULL;
402 drm_gem_object_put(gem);
403 continue;
404 }
405
406 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
407 NV_PRINTK(err, cli, "multiple instances of buffer %d on "
408 "validation list\n", b->handle);
409 drm_gem_object_put(gem);
410 ret = -EINVAL;
411 break;
412 }
413
414 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
415 if (ret) {
416 list_splice_tail_init(&vram_list, &op->list);
417 list_splice_tail_init(&gart_list, &op->list);
418 list_splice_tail_init(&both_list, &op->list);
419 validate_fini_no_ticket(op, chan, NULL, NULL);
420 if (unlikely(ret == -EDEADLK)) {
421 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
422 &op->ticket);
423 if (!ret)
424 res_bo = nvbo;
425 }
426 if (unlikely(ret)) {
427 if (ret != -ERESTARTSYS)
428 NV_PRINTK(err, cli, "fail reserve\n");
429 break;
430 }
431 }
432
433 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
434 struct nouveau_vmm *vmm = chan->vmm;
435 struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
436 if (!vma) {
437 NV_PRINTK(err, cli, "vma not found!\n");
438 ret = -EINVAL;
439 break;
440 }
441
442 b->user_priv = (uint64_t)(unsigned long)vma;
443 } else {
444 b->user_priv = (uint64_t)(unsigned long)nvbo;
445 }
446
447 nvbo->reserved_by = file_priv;
448 nvbo->pbbo_index = i;
449 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
450 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
451 list_add_tail(&nvbo->entry, &both_list);
452 else
453 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
454 list_add_tail(&nvbo->entry, &vram_list);
455 else
456 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
457 list_add_tail(&nvbo->entry, &gart_list);
458 else {
459 NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
460 b->valid_domains);
461 list_add_tail(&nvbo->entry, &both_list);
462 ret = -EINVAL;
463 break;
464 }
465 if (nvbo == res_bo)
466 goto retry;
467 }
468
469 ww_acquire_done(&op->ticket);
470 list_splice_tail(&vram_list, &op->list);
471 list_splice_tail(&gart_list, &op->list);
472 list_splice_tail(&both_list, &op->list);
473 if (ret)
474 validate_fini(op, chan, NULL, NULL);
475 return ret;
476
477 }
478
479 static int
validate_list(struct nouveau_channel * chan,struct nouveau_cli * cli,struct list_head * list,struct drm_nouveau_gem_pushbuf_bo * pbbo)480 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
481 struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
482 {
483 struct nouveau_drm *drm = chan->drm;
484 struct nouveau_bo *nvbo;
485 int ret, relocs = 0;
486
487 list_for_each_entry(nvbo, list, entry) {
488 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
489
490 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
491 b->write_domains,
492 b->valid_domains);
493 if (unlikely(ret)) {
494 NV_PRINTK(err, cli, "fail set_domain\n");
495 return ret;
496 }
497
498 ret = nouveau_bo_validate(nvbo, true, false);
499 if (unlikely(ret)) {
500 if (ret != -ERESTARTSYS)
501 NV_PRINTK(err, cli, "fail ttm_validate\n");
502 return ret;
503 }
504
505 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
506 if (unlikely(ret)) {
507 if (ret != -ERESTARTSYS)
508 NV_PRINTK(err, cli, "fail post-validate sync\n");
509 return ret;
510 }
511
512 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
513 if (nvbo->offset == b->presumed.offset &&
514 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
515 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
516 (nvbo->bo.mem.mem_type == TTM_PL_TT &&
517 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
518 continue;
519
520 if (nvbo->bo.mem.mem_type == TTM_PL_TT)
521 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
522 else
523 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
524 b->presumed.offset = nvbo->offset;
525 b->presumed.valid = 0;
526 relocs++;
527 }
528 }
529
530 return relocs;
531 }
532
533 static int
nouveau_gem_pushbuf_validate(struct nouveau_channel * chan,struct drm_file * file_priv,struct drm_nouveau_gem_pushbuf_bo * pbbo,int nr_buffers,struct validate_op * op,bool * apply_relocs)534 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
535 struct drm_file *file_priv,
536 struct drm_nouveau_gem_pushbuf_bo *pbbo,
537 int nr_buffers,
538 struct validate_op *op, bool *apply_relocs)
539 {
540 struct nouveau_cli *cli = nouveau_cli(file_priv);
541 int ret;
542
543 INIT_LIST_HEAD(&op->list);
544
545 if (nr_buffers == 0)
546 return 0;
547
548 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
549 if (unlikely(ret)) {
550 if (ret != -ERESTARTSYS)
551 NV_PRINTK(err, cli, "validate_init\n");
552 return ret;
553 }
554
555 ret = validate_list(chan, cli, &op->list, pbbo);
556 if (unlikely(ret < 0)) {
557 if (ret != -ERESTARTSYS)
558 NV_PRINTK(err, cli, "validating bo list\n");
559 validate_fini(op, chan, NULL, NULL);
560 return ret;
561 } else if (ret > 0) {
562 *apply_relocs = true;
563 }
564
565 return 0;
566 }
567
568 static inline void
u_free(void * addr)569 u_free(void *addr)
570 {
571 kvfree(addr);
572 }
573
574 static inline void *
u_memcpya(uint64_t user,unsigned nmemb,unsigned size)575 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
576 {
577 void *mem;
578 void __user *userptr = (void __force __user *)(uintptr_t)user;
579
580 size *= nmemb;
581
582 mem = kvmalloc(size, GFP_KERNEL);
583 if (!mem)
584 return ERR_PTR(-ENOMEM);
585
586 if (copy_from_user(mem, userptr, size)) {
587 u_free(mem);
588 return ERR_PTR(-EFAULT);
589 }
590
591 return mem;
592 }
593
594 static int
nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli * cli,struct drm_nouveau_gem_pushbuf * req,struct drm_nouveau_gem_pushbuf_reloc * reloc,struct drm_nouveau_gem_pushbuf_bo * bo)595 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
596 struct drm_nouveau_gem_pushbuf *req,
597 struct drm_nouveau_gem_pushbuf_reloc *reloc,
598 struct drm_nouveau_gem_pushbuf_bo *bo)
599 {
600 int ret = 0;
601 unsigned i;
602
603 for (i = 0; i < req->nr_relocs; i++) {
604 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
605 struct drm_nouveau_gem_pushbuf_bo *b;
606 struct nouveau_bo *nvbo;
607 uint32_t data;
608
609 if (unlikely(r->bo_index >= req->nr_buffers)) {
610 NV_PRINTK(err, cli, "reloc bo index invalid\n");
611 ret = -EINVAL;
612 break;
613 }
614
615 b = &bo[r->bo_index];
616 if (b->presumed.valid)
617 continue;
618
619 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
620 NV_PRINTK(err, cli, "reloc container bo index invalid\n");
621 ret = -EINVAL;
622 break;
623 }
624 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
625
626 if (unlikely(r->reloc_bo_offset + 4 >
627 nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
628 NV_PRINTK(err, cli, "reloc outside of bo\n");
629 ret = -EINVAL;
630 break;
631 }
632
633 if (!nvbo->kmap.virtual) {
634 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
635 &nvbo->kmap);
636 if (ret) {
637 NV_PRINTK(err, cli, "failed kmap for reloc\n");
638 break;
639 }
640 nvbo->validate_mapped = true;
641 }
642
643 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
644 data = b->presumed.offset + r->data;
645 else
646 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
647 data = (b->presumed.offset + r->data) >> 32;
648 else
649 data = r->data;
650
651 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
652 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
653 data |= r->tor;
654 else
655 data |= r->vor;
656 }
657
658 ret = ttm_bo_wait(&nvbo->bo, false, false);
659 if (ret) {
660 NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
661 break;
662 }
663
664 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
665 }
666
667 return ret;
668 }
669
670 int
nouveau_gem_ioctl_pushbuf(struct drm_device * dev,void * data,struct drm_file * file_priv)671 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
672 struct drm_file *file_priv)
673 {
674 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
675 struct nouveau_cli *cli = nouveau_cli(file_priv);
676 struct nouveau_abi16_chan *temp;
677 struct nouveau_drm *drm = nouveau_drm(dev);
678 struct drm_nouveau_gem_pushbuf *req = data;
679 struct drm_nouveau_gem_pushbuf_push *push;
680 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
681 struct drm_nouveau_gem_pushbuf_bo *bo;
682 struct nouveau_channel *chan = NULL;
683 struct validate_op op;
684 struct nouveau_fence *fence = NULL;
685 int i, j, ret = 0;
686 bool do_reloc = false, sync = false;
687
688 if (unlikely(!abi16))
689 return -ENOMEM;
690
691 list_for_each_entry(temp, &abi16->channels, head) {
692 if (temp->chan->chid == req->channel) {
693 chan = temp->chan;
694 break;
695 }
696 }
697
698 if (!chan)
699 return nouveau_abi16_put(abi16, -ENOENT);
700 if (unlikely(atomic_read(&chan->killed)))
701 return nouveau_abi16_put(abi16, -ENODEV);
702
703 sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
704
705 req->vram_available = drm->gem.vram_available;
706 req->gart_available = drm->gem.gart_available;
707 if (unlikely(req->nr_push == 0))
708 goto out_next;
709
710 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
711 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
712 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
713 return nouveau_abi16_put(abi16, -EINVAL);
714 }
715
716 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
717 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
718 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
719 return nouveau_abi16_put(abi16, -EINVAL);
720 }
721
722 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
723 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
724 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
725 return nouveau_abi16_put(abi16, -EINVAL);
726 }
727
728 push = u_memcpya(req->push, req->nr_push, sizeof(*push));
729 if (IS_ERR(push))
730 return nouveau_abi16_put(abi16, PTR_ERR(push));
731
732 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
733 if (IS_ERR(bo)) {
734 u_free(push);
735 return nouveau_abi16_put(abi16, PTR_ERR(bo));
736 }
737
738 /* Ensure all push buffers are on validate list */
739 for (i = 0; i < req->nr_push; i++) {
740 if (push[i].bo_index >= req->nr_buffers) {
741 NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
742 ret = -EINVAL;
743 goto out_prevalid;
744 }
745 }
746
747 /* Validate buffer list */
748 revalidate:
749 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
750 req->nr_buffers, &op, &do_reloc);
751 if (ret) {
752 if (ret != -ERESTARTSYS)
753 NV_PRINTK(err, cli, "validate: %d\n", ret);
754 goto out_prevalid;
755 }
756
757 /* Apply any relocations that are required */
758 if (do_reloc) {
759 if (!reloc) {
760 validate_fini(&op, chan, NULL, bo);
761 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
762 if (IS_ERR(reloc)) {
763 ret = PTR_ERR(reloc);
764 goto out_prevalid;
765 }
766
767 goto revalidate;
768 }
769
770 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
771 if (ret) {
772 NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
773 goto out;
774 }
775 }
776
777 if (chan->dma.ib_max) {
778 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
779 if (ret) {
780 NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
781 goto out;
782 }
783
784 for (i = 0; i < req->nr_push; i++) {
785 struct nouveau_vma *vma = (void *)(unsigned long)
786 bo[push[i].bo_index].user_priv;
787
788 nv50_dma_push(chan, vma->addr + push[i].offset,
789 push[i].length);
790 }
791 } else
792 if (drm->client.device.info.chipset >= 0x25) {
793 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2);
794 if (ret) {
795 NV_PRINTK(err, cli, "cal_space: %d\n", ret);
796 goto out;
797 }
798
799 for (i = 0; i < req->nr_push; i++) {
800 struct nouveau_bo *nvbo = (void *)(unsigned long)
801 bo[push[i].bo_index].user_priv;
802
803 PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset);
804 PUSH_DATA(chan->chan.push, 0);
805 }
806 } else {
807 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
808 if (ret) {
809 NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
810 goto out;
811 }
812
813 for (i = 0; i < req->nr_push; i++) {
814 struct nouveau_bo *nvbo = (void *)(unsigned long)
815 bo[push[i].bo_index].user_priv;
816 uint32_t cmd;
817
818 cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
819 cmd |= 0x20000000;
820 if (unlikely(cmd != req->suffix0)) {
821 if (!nvbo->kmap.virtual) {
822 ret = ttm_bo_kmap(&nvbo->bo, 0,
823 nvbo->bo.mem.
824 num_pages,
825 &nvbo->kmap);
826 if (ret) {
827 WIND_RING(chan);
828 goto out;
829 }
830 nvbo->validate_mapped = true;
831 }
832
833 nouveau_bo_wr32(nvbo, (push[i].offset +
834 push[i].length - 8) / 4, cmd);
835 }
836
837 PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset);
838 PUSH_DATA(chan->chan.push, 0);
839 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
840 PUSH_DATA(chan->chan.push, 0);
841 }
842 }
843
844 ret = nouveau_fence_new(chan, false, &fence);
845 if (ret) {
846 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
847 WIND_RING(chan);
848 goto out;
849 }
850
851 if (sync) {
852 if (!(ret = nouveau_fence_wait(fence, false, false))) {
853 if ((ret = dma_fence_get_status(&fence->base)) == 1)
854 ret = 0;
855 }
856 }
857
858 out:
859 validate_fini(&op, chan, fence, bo);
860 nouveau_fence_unref(&fence);
861
862 if (do_reloc) {
863 struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
864 u64_to_user_ptr(req->buffers);
865
866 for (i = 0; i < req->nr_buffers; i++) {
867 if (bo[i].presumed.valid)
868 continue;
869
870 if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
871 sizeof(bo[i].presumed))) {
872 ret = -EFAULT;
873 break;
874 }
875 }
876 }
877 out_prevalid:
878 if (!IS_ERR(reloc))
879 u_free(reloc);
880 u_free(bo);
881 u_free(push);
882
883 out_next:
884 if (chan->dma.ib_max) {
885 req->suffix0 = 0x00000000;
886 req->suffix1 = 0x00000000;
887 } else
888 if (drm->client.device.info.chipset >= 0x25) {
889 req->suffix0 = 0x00020000;
890 req->suffix1 = 0x00000000;
891 } else {
892 req->suffix0 = 0x20000000 |
893 (chan->push.addr + ((chan->dma.cur + 2) << 2));
894 req->suffix1 = 0x00000000;
895 }
896
897 return nouveau_abi16_put(abi16, ret);
898 }
899
900 int
nouveau_gem_ioctl_cpu_prep(struct drm_device * dev,void * data,struct drm_file * file_priv)901 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
902 struct drm_file *file_priv)
903 {
904 struct drm_nouveau_gem_cpu_prep *req = data;
905 struct drm_gem_object *gem;
906 struct nouveau_bo *nvbo;
907 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
908 bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
909 long lret;
910 int ret;
911
912 gem = drm_gem_object_lookup(file_priv, req->handle);
913 if (!gem)
914 return -ENOENT;
915 nvbo = nouveau_gem_object(gem);
916
917 lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
918 no_wait ? 0 : 30 * HZ);
919 if (!lret)
920 ret = -EBUSY;
921 else if (lret > 0)
922 ret = 0;
923 else
924 ret = lret;
925
926 nouveau_bo_sync_for_cpu(nvbo);
927 drm_gem_object_put(gem);
928
929 return ret;
930 }
931
932 int
nouveau_gem_ioctl_cpu_fini(struct drm_device * dev,void * data,struct drm_file * file_priv)933 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
934 struct drm_file *file_priv)
935 {
936 struct drm_nouveau_gem_cpu_fini *req = data;
937 struct drm_gem_object *gem;
938 struct nouveau_bo *nvbo;
939
940 gem = drm_gem_object_lookup(file_priv, req->handle);
941 if (!gem)
942 return -ENOENT;
943 nvbo = nouveau_gem_object(gem);
944
945 nouveau_bo_sync_for_device(nvbo);
946 drm_gem_object_put(gem);
947 return 0;
948 }
949
950 int
nouveau_gem_ioctl_info(struct drm_device * dev,void * data,struct drm_file * file_priv)951 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
952 struct drm_file *file_priv)
953 {
954 struct drm_nouveau_gem_info *req = data;
955 struct drm_gem_object *gem;
956 int ret;
957
958 gem = drm_gem_object_lookup(file_priv, req->handle);
959 if (!gem)
960 return -ENOENT;
961
962 ret = nouveau_gem_info(file_priv, gem, req);
963 drm_gem_object_put(gem);
964 return ret;
965 }
966
967
